Ammonia-pump.



110.815,?)11. H PATENTED R. 20; 1 906. A. H. EDDY.

AMMONIAPUMP.

APPLICATION nun mm. 1904.

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a A. H. EDDY.

I AMMONIA PUMP.

APPLIOLjIO]: FILED ELY 4 2. 1904.

rzyi- I PATENTED'MAR. 20, 1906.

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' isfa bracket'S, with a bearin which sup lorts.

a shaft havinf'a pulley-9jon l1 a-s'mall'beve o of;t; sham-case.- -T 1:bearin' ,is ground and. jinolrshed, so as tocIOseIyfit't egro ind andp'ohshed arbor'll. the 'lower'end (St-the 4 Te all whom it con cervix i1 stir, in the connty'of Hartford an ...us ef u-l Improvements inAmmonia Pumps of p shows a central vertical sectionof this pump.;

I plan'of the away, as in gear-12', that is in mesh with the bevelear.

the 1 3 I 0n, the, bottomziofvthe "eam-caseJis-r-a'; grooved ring :14,and on the bottom .of the icam-eylinder'isagrooved rin 15f. Betweenthese-ringsareantifriction-ba s,-

Set-screws 1 6 are screwed through the bottom-of .the' earn-case againstthe under side "of the lower singe t .155 ad usting the cam eylinderverticall inthe cam cas'e. -3These j'a'i'e'provi ed-witli' FFIOE. I

mm H. EDDY, OF winosos, ooNNEo'tnoUT. i

Be it known ith'atI, ARTHUR H.

citizenof the United States, residing atWind:

a, I State of Connecticut," 'havejinv'ented certain new and mo'niafor-refri%erat1ng'purposesi j the 1nvent1on -1s t'o roduee a Loan be nesbut-little attention. he pump-illustrated has a case containing acamwhichis adapted to'be rotated from:-

and whiehis'p'rovided with a valve-plate'and Figure lief theaccompanying drawings.

-2. shows a horizontal'section on theplane 1n ieatedby '2r;2fon"Fig.-11-; Fig. '3 shows-a piston-case with a portion brokenics'a.tediby 3 3on F g. 1. Fi 4 is.- a vertical sectionon the planemdicate by 4. 4=of-3, taken "thiou h the:head-plate,- ate, and up er'en ofthe piston-case.

. w Fig. 5, 1s a'plan'oft e under sidof the head; plate. Fig. '6 isaview of one'o'f thepistons.

The carnecase 7 is preferably cast to shape; ofnon, and-is su portedon'an 'desired forma. of legs. Secure gto, ones'ide o the cam-case teouter en and gear-101011 the ;inner'end.I-'"- lon -;vertical bearin"is'formed at the'bottoin arbor outside-of the cam-case is alargebevleh" on: the; pulley-shaft?- theupper en -of arbor in'the oain-ca'se is the cam-cyhnder purpose of changing itsZlevel and"fipeeification rig-1mm Patent. Application tiled 1.,51904. ss -i=1 No.200.288.

AumomA-PumP.

i nuts l7;'which areused to lock the screwsin EnDY,-- a

position and prevent leakage.

Around the interior-of the cam-cylinderare -the cam-ribs 18. Betweentheseribs'arethe T0118 19, which are mounted on studs project- "PatentedMarch so, 190s. i

from the shanks of the" istons'20.[,. A's

. thecam-eylinder rotates the ower'rib forces the pistons upwardly andthe-upper rib draws. Y T the pistons downwardly. T preferably so. shapedthat the pistons are orced-up'ra'pidly and drawn down slowly;

ing between'the ri s. The upper section of shank section is"approxlmately semicylin ese ribs are-- *A short section of the-upper ribis cut away; so-that therolls ma be inserted into the opendricaL; the"outer face of eachshank being 1 shaped" to conform to the inner wallsof; the" cam-ribs. v I p Thepiston-c'ase 21, which contains the cyl- J,"indersjmwhichlthe istons move, is preferf ably cast to shape ,-oiron,.andhas tslower. j face ground so as toclosely fit thegroundupperface. of-th'e 'can case to which 'itis bolted. jA- hollowhub'22'eiztends downwardly from a the eentersofthe piston-case .into the411} thecam-ribs; Thefcylinder' bores are-c0nlinder, "the diameter ofthis-hub being-but ghtly smallertha'n the interior diameter'of. 5. p

tinned in this-hu an j t 11 dricalq-shanksof thes n Which-re agfitrotation by t e-eng g f athreaded nut 25, the interior wall ofwhic.is preferablyj -tapered; The valve.- disk 26 has. its-lower faeegroundand olis'lie'd, so as -w1de outer surfaces with the inner'surfaces-of rthe cam-ribs; Each" iston is tubular, and in go the upperen'd of the oreof each piston is a r hardenedannul'ar plate 23, that has aground andpolished'v alve-seat 24 on its upper slde.

to makeclose-contactwith t e'valveseat,

and has its edgefbeveled'; so that it wil l be guided-to its seatbythebeveled interior-wall of. the nut. stem 27 extends downwardly fromthe valvedisk into thepiston and 1s p1o-'. i vided witha 'in-which'revents the (1181008)- tion of the va ve'. I Eac Piston is preierably-,provided with two grooves contaimngISP packingq'in s 28', that areground so aspt q i make-tight oints withthe' wall of the cylm fd r Bs en h oo -i nt nin 't kin n s. my be. a m .9 will provide anbil-paokingorthe plsf ;I. -II4 Th alveplatin} Q isplaced upon "top 1flaohpisto'n'is oylindrical and'the lower-or upper of the piston-case,and the head-plate 31 is placed on top of the valve-plate. The undersurface of the valve-plate is ground to fit the ground upper end of thepiston-case, and the upper face of the valve-plate. and lower face ofthe head-plate are ground so that they tightly together. Screws arepassed through the head-plate and valve-plate into nd oi the piston-caseabout each 2 icr holding the parts together. 1

Above each cylinder in the valve-plate is opening containing a threadednut 32, having valve-seat that is very hard on its This valve-seat isground and polished so to be very smooth. Above the valveseat in eachopening is a valvedisk 33, has its under face ground and polished so asto closely fit the valve-seat. A tapered stem 3% is fastened to thisdisk, so as to extend. into the tapered opening through the -nut for thepurpose of guiding the valve to its seat.

In the under face of the head-plate above the valves m an annular groove35, which on one mile communicates with an opening 36 through thevalve-plate and an outlet 37 in the upper end of the piston-case, whichis adapted to be connected with the pipe which leads to thegas-receiver. v Ammonia is received into the cam-case through the open38 on one side and is pumped by the pistons past the valves to theoutlet as the cam is rotated.

The cam-case is referably filled with oil nearlyto thelevel o theammonia-inlet. This oil prevents any possibilitlyrof the leakage of gasabout the cam-arbor t ough the opening in the bottom of the can1case,which -0 ening is the on] one from the interior to t e extenor of t cpump which contains a moving part. On account of the closeness of thejoint and length of the bearing, also the use of oil, which'not onlylubricates the arbor, but packs thejoint, there is no possible chancefor gas to leak.

The web of the bevel-gear below the camcase is preferably madedish-shaped, so as to hold any oil that might possibly leak from theinterior about the cam-arbor.

The pistonecase around the cylinders is chambered, andwater or othercooling medrum is caused to enter the space about the cylinders throughthe opening 39 at the bottom on one side of the piston-case and aftercirculating about the cylinders to flow out through the opening 40 atthe top on the other side. I

The parts of this pump are strong and durable. They are simple to makeand are easily assembled. There is but one opening containing a movingpart, and that is so arranged that it does not require a packing toprevent leakage, although a packing can be used, if desired. The valvesare very simple and require no springs to assist their operaciency;

tion. The pistons are effective and are so adjusted by raising orlowering the rotary cam that they move upwardly close to the under faceof the valvenplatc. In practice the pistons are preferably adjusted sothat there will be noclcarancc between. their upper ends and the underside of the valvcplate when they are at the limit of their upwardmovement, thus insuring great elli- The pistons and the cams work easilyand have such broad bearing-faces that the wear amounts to nothing. Thecam cylinder can be adjusted while the pump is running, and after beingproperly adjusted the pump will run for a long time without furtherattention.

The invention claimed is 1. A pump having a tight case containingconcentrically-arranged cylinders, each cylinder having an inlet-openingat one end and an outlet-opening at the other end, a rotatable camlocated near one end of and iucloscd in the case, the aXis of the camextending parallel with the axes of the cylinders, means or rotating thecam, pistons with fluid-passages through them located in the cylindersand adapted to be positively reciprccated by the rotation of the cam,valves controlling the passages through the pistons carried by ings atone end of the cylinders held by the case, substantially as specified.

2. A pump having a case, a rotatable cam in the case, means for rotatingthe cam, pistons located in cylinders in the case and adapted to bepositively reciprocated by the rotation of the cam, inlet-valves carriedby the pistons, discharge-valves held by the case, and a cooling-chambersurrounding the cylinders in the case, substantially as specified.

3. A pump having a case, a rotatable cam in the case, means for rotatingthe cam, a ball-ring at the bottom of the case, balls located betweenthe ring and the cam, pistons located in cylinders in the case andadapted to be positively reciprocated by the rotation of the cam,inlet-valves carried by the pistons, and discharge-valves held by thecase, substantially as specified.

4. A pump having a case, a rotatable cam in the case, means for rotatingthe cam, a ballring at the bottom of the case, means for adjusting theball-ring axially of the cam,

balls located between the ring and the. cam,

pistons located in cylinders in the case. and adapted to be positivelyreciprocated by the rotation of the cam, inlet-valves carried by thepistons, and discharge-valves held by the case, substantially asspecified. I

5. A pump having a case, a rotatable cam in the case, means for rotatingthe cam, pistons located in cylinders in the case and having shanks thatare adapted to be reciprocated by but held against rotation by the cam,inlet-valves carried by the pistons, and

- discharge-valves held by. the'case', subs t'an-J tially as specified.

6. A pump having a case, a rotatable cam in the case, means for rotatingthe cam, pistons located in cylinders in the case and 1 adapted to bereciprocatedby the rotation of cam in the cam-case, means for rotating;the

from the cam through the bottom of the camthe cam, afiat inlet-valveseat in each piston, a flat disk carried by each piston and adapted toopen from and'close again'stthe inlet-4 valve seat, andfopposite eachpiston a flat.

dischar e-valve seat and .a flat valve -.disk adapted flatdischarge-valve seat, substantially as Specified.

7 .A pump having acam case, a rotatable cam, ajpiston-case s'ecured tothe cam-case, pistons located in cylinders inthe istoncase' and ada tedto be reciprocated y the rotation oft e cam, inlet-valves earriedby thepistons, a valve-plate secured to the piston-case, dischargewalveslocated in open-, ings in the valve-plate and a head-plate se-' cured tothe valve-plate, substantially as specified 8. pump havinga cam-case, arotatable cam in the cam-case,- an arbor extending case, a gear on thearbor below the cam-case, a pulley and gear for thecam-gear, a

iston-case secured to the cam-case, pistons ocatedin cylinders in thepiston-case and adapted to be reciprocated the rotationof b the.cam,'inlet-valves carried by the pistons,

a valve-plate secured to the piston-case, dischargevalves located inopemn s in the valve-plate, and a head secured to e'valve- .plate,substantially as specified.

- 9. pump having a cam-case, a rotatable cam in the cam-case, means forrotating the "cam, a piston-case having a hub that fits the 'lntellOlkof the rotatable cam, pistons located in cylinders in the piston-case,the shanks of I I said pistons on the inside fitting grooves in rior ofthe cam and h the cam,"inletvalves.

the-hub and. on the outside fitting the inteaving rollers engaged bycarried bythe pistons,

. a valve-plate secured .to the piston-case, discharge-valves located inope inthe valveplate, and a head-plate secured to the valve-plate,substantially as'specifiedpump having a cam-case, a bearing atthe'bottom of'thecam-case, an-arbor ex- 4 tendin through the bearing, agear attached lOIA to theovver end of-thearbor outside of the -'apiston-case secured to the cam-case -c linders an it e rotation of thecam,'1n let-va ves named to open from and close against the cam-case, ac lindricalcam attached to the upper end of t y e arbor'inside of thecam-easei containing cglinders; pistons located in the adaptedto be reeirocatedby by the pistons, a valve-plate secured tothe p1stonacase,discharge-valves located 7 openings in the valve-plate, and a head 83"8ate,

cured to thegvfiw ll specified.

11. Apump substantially as in cylinders in the case and provided withrolls engaging the cams, inlet-valves carried by the pistons, anddischarge-valves held by the case, substantially as specified.

. 12. A pump having a case, a rotatable camin the case, means forrotating the can having case, a rotatable cylg inder in the case, camssecured tothe mterior of the rotatablecylinder, pistons located. 7

pistons having cylindrical heads and sermcylindrical shanks located incylinders in the case,roll s mounted on the piston-shanks and ders inthe case, theshanks of-the. istons" having rolls lying between thecam-r} s and having their outer faces fitlllllg thel1 itfl0l' Walls ofthe cam-ribs, inlet-valves carried by the pistons, and discharge-valvesheld by the case, substantially as specified. ,j

" 14. vA pump-having a tight case containing concentrically-arrangedcylinders, arotatable cam located near one end of and lnclosed yparallel with the axes of the cylinders, means V in the-case, the axisof the cam extending or rotating the cam, pistons with fluid as' sagesthrough them arranged in the cglin 91's in the case on one side of theearn an adapted to be ositively reciprocated by the rotation of t sagesthrough the pistons carried by the p1s.- tons, and valves-controllingope from the cylinders held by the case, substantially as specified. I

i v ARTHUR H. EDDY. Witnesses: I

HARR R.

Errmr. M. Lows.

e cam; valves controllingthe pas-

